An Upper Bound of 62 on the Classical Ramsey Number R(3, 3, 3, 3). - Susan E. Fettes; Richard L. Kramer; Stanislaw P. Radziszowski (Ars Comb., 2004)

Relation algebras of Sugihara, Belnap, Meyer, and Church. - Richard L. Kramer; Roger D. Maddux (J. Log. Algebraic Methods Program., 2020)

Monk algebras and Ramsey theory. - Richard L. Kramer; Roger D. Maddux (J. Log. Algebraic Methods Program., 2022)